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Join Date: Nov 2004
Location: Netherlands
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I repeat: You CAN'T use Strings.
So you MUST use either Enums or integer literals.
So you MUST use either Enums or integer literals.
42 Private messages asking for help will be ignored
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
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Join Date: Dec 2006
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Newbie Poster
where did u find your sampl about switches on mathematical operation?
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Join Date: Dec 2006
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Newbie Poster
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Originally Posted by jwenting 
I repeat: You CAN'T use Strings.
So you MUST use either Enums or integer literals.
Well, of course you can't use Strings directly, but with the use of default enum mappings you can get nearly exactly the same thing. Looking at this:
http://www.xefer.com/2006/12/switchonstring
Enum.valueOf() is using a hash map to lookup values by the actual name of the enum, so effectively this is doing what any other language that supports switches on string is doing under the hood.
This is certainly better than using a cascade of if/else statements or ginning up a hash implementation from scratch.
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Junior Poster in Training
Well I think what you can do is you can use string operation on your input to get such a Switch Case Statement
For Example if you want to go for Black, blue or something else.....what you can do is you make user enter string and find the alphabet position where every string has a different Char
For Example
Black
Blue
Here if you take out 3rd char and Put Switch Case statement for 3rd Char
Case 'c':
Means Input was Black
Case 'u':
Means input string was Blue...
I think it can be done in this way but I am not sure ....Can anyone tell me is it possible or not
For Example if you want to go for Black, blue or something else.....what you can do is you make user enter string and find the alphabet position where every string has a different Char
For Example
Black
Blue
Here if you take out 3rd char and Put Switch Case statement for 3rd Char
Case 'c':
Means Input was Black
Case 'u':
Means input string was Blue...
I think it can be done in this way but I am not sure ....Can anyone tell me is it possible or not
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Join Date: Dec 2006
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Newbie Poster
i can help u! Just leaving m know i can assist u later. ok . fine?
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Join Date: Nov 2005
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Junior Poster in Training
Re: switch statement on String in Java Only way I know how to emulate a switch on strings, and this has already been mentioned without example code, is like the following:
Keep in mind that the checks are all performed, in order, until a match is made. With large "switch" statements, the more common values should be placed near the beginning, and less common values can come near the end of the if-else statements. That'll speed up code execution, because common values won't have to be checked against dozens of not-so-common values before a match is found.
java Syntax (Toggle Plain Text)
Keep in mind that the checks are all performed, in order, until a match is made. With large "switch" statements, the more common values should be placed near the beginning, and less common values can come near the end of the if-else statements. That'll speed up code execution, because common values won't have to be checked against dozens of not-so-common values before a match is found.
synchronized (theWorld) { System.out.println ("It's all mine..."); }
How many people have code in their Sigs?
How many people have code in their Sigs?
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Join Date: Nov 2004
Location: Netherlands
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That's not a switch at all, it's just a massive if-else statement pushed into a method (not a bad idea per se) that you called "switch".
42 Private messages asking for help will be ignored
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
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